Turret-type gas burner



Dec. 2l, 1954 A. J. MCNALLY TURRET-TYPE GAS BURNER Filed June 8, 1951 n:m r. w L... G

United States Patent O TURRET-TYPE GAS BURNER Arthur J. McNally,Brooklyn, N. Y.

Application June 8, 1951, Serial No. 230,511

2 Claims. (Cl. 158-105) This invention relates to improvements in fuelburner heads adapted to burn gaseous or Vaporous fuels.

lt is common practice among glass blowers, Welders and the like to havea plurality of burners or burner heads each adapted to a specific typeof llame or volume of combustible gas. Much valuable time is spent insuch burner operations in changing burners or burner tips since suchinterchange necessitates an extinguishment of the flame and ignition ofa new flame along with time wasted in adjusting the size of the newlyignited fiame.

Moreover during such interchange of burner tips the substance ormaterial being treated cools, which frequently results in defectivefinal products especially as they relate to glass, vitreous, or metallicproducts. Clearly an invention which obviates such disadvantages isadvantageous not only in an economic sense but also in the quality ofthe product.

The hereinafter described invention is adapted for use in the arts ofglass blowing, welding, flame throwing, blast furnaces, and for generalshop usage.

An advantage when used in conjunction with military type fiame throwersis that it obviates the need for changing of burner tips, avoids wastageof combustible gas, iand nulliies the need for adjusting the size of thegas ame.

An advantage when used in conjunction with blast furnaces for thesmelting of ore is that only one compact turret-type burner isnecessary, in lieu of a plurality of separate burners.

One object of the invention is to provide a turret type burner having aplurality of burner tips say 1, 2, 3 etc. in which as 2 replaces l byrotation of the burner head 1 is not extinguished until 2 is lighted, 2being automatically ignited from 1.

Another object is to provide a practical means of sealing the rotatableturret to the fixed base to prevent the leakage of gas or gaseous fuelmixtures.

Another object of this invention is to produce a burner adapted torotary sealing-off of the burner gases.

Still other objects will become apparent upon reading the followingdescription of this invention.

This invention is illustrated in the accompanying drawing which forms apart of this specification and in which, Fig. l is a perspective View ofthe novel burner head, Fig. 2 is a partial cross-sectional view takenalong line 2-2 of Fig. l and looking in the direction of the arrows,with the lower portion of the base cut away and showing a fuel orificein register with the inlet part 12 for continuous burning, Fig. 3 is across-sectional view taken along line 3 3 of Fig. 4 and showing the pathof travel of the combustible gases during interchanging of burner tips,Fig. 4 is a partial cross-sectional view analogous to Fig. 2 but showingthe position of the inlet port 12 relative to two adjacent feederchambers 23 during interchange between burners, and Fig. 5 is a crosssectional view taken on line 5-5 of Fig. 2, showing the inlet port 12 inregister with a burner tip and further showing the alignment of theburner tips to effect a common focal oint. p Turning now to the drawing,and in accordance with my invention, a base, i. e. a base portion orbase element 10, having a highly polished or lapped surface 11 1sprovided with an incoming or inlet gas port 12.

In juxtaposition to the base portion or element is a turret 13 having ahighly polished or lapped surface 14, which surface is held in gas-tightfrictional contact'wlth the adjacent lapped surface 11 of the base 10.This ar- :rangement of frictionally engaged surfaces allows for therotatability of the turret 13 relative to the xed base 10 withoutescapement of gas because of the lapped surfaces therebetween. For easeof gripping the turret to effect rotation by one hand, a knurledcircumferential surface area 15 may be provided.

The turret 13 is preferably provided with a concave or dished-in surface16 on the side of the turret opposed to its lapped surface 14. Aplurality of selectable gas, or fuel mixture orifices 17 have their axeslocated at points equidistant from the turret axis 18 and diameterswhich may be equal to the diameter of and therefore adapted to registerwith inlet port 12 of the base element 1f). Selectable burner tips 19communicate with said orifices in any suitable manner e. g. byengagement of threaded portions 19A with nipples 20. The axes of theburner tips 19 and nipples 20 preferably are substantially perpendicularto the dished-in surface 16, whereby the burner tips 19 converge, as inFig. 5.

Because of the concavity 16 of the turret, the burner tips are focusedto a common focal point, which focal point is the location of theobject, e. g. the glass being heated.

Burner tips 19 may be provided with a knurled surface 21 adjacent theirbase for easy detachment from the rotatable turret and have outletopenings 22 of selectably greater or lesser diameter.

Extinguishment of the burner flame during the interval of switching orchanging from one selectable burner tip 19 to another adjacent tip isprevented by feeder chambers or recesses 23 in communication with eachof the several orifices 17.

These chambers 23 have, as specifically shown in the drawings, anelongated or sausage shape the extremities of which are equidistant fromthe axis of the orifice 17 communicating thereto. These elongated feederchambers 23 are circumferentially disposed around and radiallyequidistant from center axis 18. The feeder chambers approach each otheron a common circular orbit but do not communicate with each otherinasmuch as they are separated by a web 24 of the turret element 13.

The width of web 24 must be less than the diameter of the inlet port andthe ratio of that width may be as low as is consistent with reasonablemechanical strength. About 0.25 is an illustrative value of said ratioand 0.10 to 0.45 may be taken as a preferred range. The web ispreferably defined by two opposed convex-concave walls as shown in Figs.2 and 4.

As can be readily seen from Figs. 3 and 4 which illustrate a position ofthe web 24 during interchanging between two adjacent burner tips 19, gasfrom inlet port 12 is supplied to each of two adjacent feeder chambers23 thereby allowing split second or instantaneous ignition of the gasissuing from a newly ignited burner tip 19 by the heat and fiame of thegas issuing from the burner tip being displaced, aided by the proximityof the outlets 22 caused by the convergence of the axes of the tip 19.

Fig. 4 and Fig. 5 show the registry of inlet port 12 of the base 10 incommunication with a selected orifice 17 located in the turret, and isthe position for continuous burning or normal operation of the flame.For locking the selected burner tip 19 in place for normal operation, alocking pin 25 is recessed into the base element 10 and is actuated by aspring 26. The locking pin 25 co-acts with a recessed well 27 adapted toengage the pin head and frictionally lock the base 11i to the turret 13.A plurality of recessed wells 27 are circularly disposed through thelapped surface portion of turret 13 equidistant from axis 18. Theco-acting locking pin is located in the base 10 so as to lock the baseto turret 13 only when the inlet port 12 of the base 10 is in registerwith any one of the selected orifices 17 communicating with a burner tip19. Other conventional automatic means for locking base 10 to turret 13are equally feasible.

Base 10 is axially connected to rotatable turret 13 by any conventionalmeans, for example, a bolt and nut assembly 28.

Furthermore the entire burner head may be removably fixed to a twopronged bracket 29 mounted to a rigid surface, said pronged bracketbeing tightened, by means 0f` a conventionaly wing nut assembly 30, tothe gas inlet-conduit-orpipe 31;

While this invention has been illustrated by a preferred embodimentthereof it is to be'v understood that the scope ofzthisi invention: is:not to, be, limited to ythis embodiment; butrather:on1yas definedV inthe:v claims,ultimately.v ap.- pendedzhereinafter.

Inzaccordance with well.` established law the; applicant. it`entitledto, all: uses: to `which. his. invention. may; or; can; be put.For example the burnerof'thisinvention is not: limitedtuthefuse.V offuels in the. gaseousorY vapor. phase. Itcarnalsoy be'usedwith. anyfuel5ir1 the;liquid. or. solid phase whichcan be. carried ina\streamsof-gasincludingair; or ox-ygenforV example. oiLor;pulverizedcoal; carbon; etc;

What is :claimedfis L. As burner head 'comprisingqin combinationasubstanf tiallyfat disk-shaped baseimember: provided with afuel:inletaport, a substantially at disk-shaped, turret; member. provided:with: aiplurality.- of. fuel outlet; ports;` said members-Q being;provided. with; peripheral,y contacting surfaces,. one? of,y saidImembersl beingi provided with. separate circumferentially extending;interior recesses for feeding fuel from said inlet portto.said'outlet:p.orts, eachrecessindividuallyf communicating with anoutlet` port, means.v for holding,said two members in face. to-face,relatively ro.- tatable, slidingr engagement,A with their peripheralcon: taeting surfaces in uid tight engagement, and a plu:-

rality of converging, individually detachable burner tips carried bysaid turret member and respectivelycommuni-V eating with the fuel outletports therein, said tips being in igniting relation at their outer ends,said fuel feeding interior recesses being larger than any of said fueloutlet ports, adjacent recesses being so shaped as to overlap said inletport and feed fuel to two adjacent outlet ports when the turret memberis turnedio bring another burner tip into operative position.

2. The combinationA asset forthin claim 1 wherein said turret memberis,provided with a dished-in outer surface sloping toward" the centerthereof; the respective axes of the severaljburner. tips beingsubstantiallyperpendicular to said dished-in surface of the turretmember.

